CIF:Small:Non-Orthogonal Multiple Access with Imperfect Assumptions

CIF：小：不完美假设的非正交多址

• 批准号: 2008786
• 负责人: Hamid Jafarkhani
• 金额: $ 14万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-10-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2008786&HistoricalAwards=false
• 关键词: CIF; Small; Non; Orthogonal; Multiple

There has been a tremendous emergence of new applications of wireless communications in different aspects of life. These new applications and the corresponding opportunities have improved the quality of life, provided economical growth, and helped the expansion of new businesses. The next generation of wireless, dubbed 5G, promises unmet demands for higher transmission data rates through designing more efficient wireless communication networks. To increase the efficiency of the emerging wireless networks, the concurrent transmission of different users, as pursued in this project, is unavoidable. The outcomes of this year-long project can help inform future generations of wireless communications standards and spur a new direction of research that can greatly increase the efficiency of radio spectrum used for wireless communications.Recently, Non-Orthogonal Multiple Access (NOMA) has been suggested as an efficient method to enable the concurrent transmission of multiple users in the same frequency/time resource block. It provides many nice properties including high bandwidth efficiency, fairness among different users, and ultra-high connectivity. While the above properties can be very advantageous, they are obtained under perfect assumptions, such as the availability of perfect synchronization. For the multiuser/multi-cell environments for which NOMA is an essential technology, these assumptions are more likely to be violated. In this exploratory project, the investigator studies the effects of imperfect timing synchronization in multi-user NOMA systems and design high performance NOMA systems.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在生活的不同方面，无线通信的新应用大量涌现。这些新的应用程序和相应的机会提高了生活质量，提供了经济增长，并有助于新业务的扩展。被称为5G的下一代无线技术通过设计更高效的无线通信网络，承诺了对更高传输数据速率的未满足需求。为了提高新兴的无线网络的效率，在这个项目中追求的不同用户的并发传输是不可避免的。这个为期一年的项目的成果将有助于为未来的无线通信标准提供信息，并激发一个新的研究方向，可以大大提高无线通信所使用的无线电频谱的效率。最近，非正交多址接入（NOMA）被认为是一种有效的方法，可以使多个用户在同一频率/时间资源块中并发传输。它提供了许多很好的属性，包括高带宽效率，不同用户之间的公平性，以及超高的连接性。虽然上述性质可能非常有利，但它们是在完美的假设下获得的，例如完美同步的可用性。对于NOMA是一项基本技术的多用户/多小区环境，这些假设更有可能被违反。在这个探索性的项目中，研究人员研究了多用户NOMA系统中不完美的定时同步的影响，并设计了高性能的NOMA系统。这个奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为是值得支持的。

项目成果

Reconfigurable Intelligent Surface-Aided NOMA with Limited Feedback

• DOI: 10.1109/icc45041.2023.10279591
• 发表时间: 2023-01
• 期刊: ICC 2023 - IEEE International Conference on Communications
• 作者: Mojtaba Ahmadi Almasi;H. Jafarkhani

Joint Beamwidth and Power Optimization in MmWave Hybrid Beamforming-NOMA Systems

• DOI: 10.1109/twc.2020.3042518
• 发表时间: 2021-04
• 期刊: IEEE Transactions on Wireless Communications
• 影响因子: 10.4
• 作者: Mojtaba Ahmadi Almasi;Lisi Jiang;H. Jafarkhani;H. Mehrpouyan

Low-Complexity Joint User and Power Scheduling for Downlink NOMA Over Fading Channels

• DOI: 10.1109/vtc2021-spring51267.2021.9448865
• 发表时间: 2021-04
• 期刊: 2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)
• 作者: Do-Yup Kim;H. Jafarkhani;Jang-Won Lee

Low-Complexity Dynamic Resource Scheduling for Downlink MC-NOMA Over Fading Channels

• DOI: 10.1109/twc.2021.3123298
• 发表时间: 2021-03
• 期刊: IEEE Transactions on Wireless Communications
• 影响因子: 10.4
• 作者: Do-Yup Kim;H. Jafarkhani;Jang-Won Lee

Downlink Asynchronous Non-Orthogonal Multiple Access With Quantizer Optimization

• DOI: 10.1109/lwc.2020.2998407
• 发表时间: 2020-05
• 期刊: IEEE Wireless Communications Letters
• 影响因子: 6.3
• 作者: Xun Zou;M. Ganji;H. Jafarkhani